/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-52.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:04:25,672 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:04:25,733 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 13:04:25,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:04:25,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:04:25,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:04:25,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:04:25,760 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:04:25,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:04:25,760 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:04:25,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:04:25,761 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:04:25,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:04:25,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:04:25,762 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:04:25,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:04:25,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:04:25,762 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:04:25,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:04:25,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:04:25,763 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:04:25,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:04:25,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:04:25,764 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:04:25,764 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:04:25,765 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:04:25,765 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:04:25,765 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:04:25,765 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:04:25,766 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:04:25,766 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:04:25,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:04:25,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:04:25,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:04:25,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:04:25,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:04:25,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:04:25,767 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:04:25,767 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:04:25,768 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:04:25,768 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:04:25,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:04:25,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:04:25,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:04:25,769 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:04:25,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:04:25,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:04:25,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:04:25,974 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:04:25,974 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:04:25,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-52.i [2024-11-03 13:04:27,257 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:04:27,397 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:04:27,397 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-52.i [2024-11-03 13:04:27,402 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b64f48bd/4ccf6c5d1d0f47b98cde3ca5c0d939fc/FLAG0f52d367f [2024-11-03 13:04:27,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b64f48bd/4ccf6c5d1d0f47b98cde3ca5c0d939fc [2024-11-03 13:04:27,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:04:27,416 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:04:27,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:04:27,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:04:27,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:04:27,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3383b8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27, skipping insertion in model container [2024-11-03 13:04:27,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,438 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:04:27,541 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-52.i[915,928] [2024-11-03 13:04:27,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:04:27,575 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:04:27,584 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-52.i[915,928] [2024-11-03 13:04:27,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:04:27,613 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:04:27,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27 WrapperNode [2024-11-03 13:04:27,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:04:27,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:04:27,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:04:27,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:04:27,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,648 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2024-11-03 13:04:27,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:04:27,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:04:27,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:04:27,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:04:27,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,666 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,674 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 13:04:27,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:04:27,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:04:27,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:04:27,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:04:27,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (1/1) ... [2024-11-03 13:04:27,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:04:27,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:04:27,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 13:04:27,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 13:04:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:04:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:04:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 13:04:27,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 13:04:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:04:27,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:04:27,811 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:04:27,813 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:04:28,008 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-03 13:04:28,008 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:04:28,019 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:04:28,020 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 13:04:28,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:04:28 BoogieIcfgContainer [2024-11-03 13:04:28,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:04:28,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:04:28,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:04:28,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:04:28,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:04:27" (1/3) ... [2024-11-03 13:04:28,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f1dd1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:04:28, skipping insertion in model container [2024-11-03 13:04:28,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:27" (2/3) ... [2024-11-03 13:04:28,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f1dd1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:04:28, skipping insertion in model container [2024-11-03 13:04:28,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:04:28" (3/3) ... [2024-11-03 13:04:28,027 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-52.i [2024-11-03 13:04:28,038 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:04:28,039 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:04:28,087 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:04:28,093 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74a33006, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:04:28,093 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:04:28,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 13:04:28,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-03 13:04:28,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:04:28,105 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:04:28,106 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:04:28,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:04:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1915705130, now seen corresponding path program 1 times [2024-11-03 13:04:28,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:04:28,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323338881] [2024-11-03 13:04:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:04:28,117 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:04:28,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:04:28,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:04:28,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:04:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:04:28,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 13:04:28,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:04:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 326 proven. 36 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-03 13:04:28,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:04:28,865 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-03 13:04:28,866 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:04:28,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323338881] [2024-11-03 13:04:28,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1323338881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:04:28,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:04:28,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2024-11-03 13:04:28,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213272866] [2024-11-03 13:04:28,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:04:28,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 13:04:28,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:04:28,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 13:04:28,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-03 13:04:28,889 INFO L87 Difference]: Start difference. First operand has 52 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-03 13:04:29,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:04:29,686 INFO L93 Difference]: Finished difference Result 207 states and 359 transitions. [2024-11-03 13:04:29,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-03 13:04:29,689 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 113 [2024-11-03 13:04:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:04:29,695 INFO L225 Difference]: With dead ends: 207 [2024-11-03 13:04:29,695 INFO L226 Difference]: Without dead ends: 158 [2024-11-03 13:04:29,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2024-11-03 13:04:29,700 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 220 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 13:04:29,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 267 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 13:04:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-03 13:04:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 59. [2024-11-03 13:04:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 13:04:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2024-11-03 13:04:29,750 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 113 [2024-11-03 13:04:29,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:04:29,751 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2024-11-03 13:04:29,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-03 13:04:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2024-11-03 13:04:29,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-03 13:04:29,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:04:29,753 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:04:29,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-03 13:04:29,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:04:29,954 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:04:29,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:04:29,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1106358504, now seen corresponding path program 1 times [2024-11-03 13:04:29,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:04:29,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476526340] [2024-11-03 13:04:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:04:29,955 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:04:29,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:04:29,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:04:29,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:04:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:04:30,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-03 13:04:30,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:04:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-03 13:04:38,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:04:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-03 13:04:50,125 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:04:50,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476526340] [2024-11-03 13:04:50,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [476526340] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:04:50,126 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:04:50,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2024-11-03 13:04:50,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378494617] [2024-11-03 13:04:50,126 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:04:50,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 13:04:50,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:04:50,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 13:04:50,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-03 13:04:50,129 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-03 13:04:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:04:52,183 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2024-11-03 13:04:52,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 13:04:52,185 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 113 [2024-11-03 13:04:52,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:04:52,187 INFO L225 Difference]: With dead ends: 104 [2024-11-03 13:04:52,187 INFO L226 Difference]: Without dead ends: 102 [2024-11-03 13:04:52,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2024-11-03 13:04:52,190 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 114 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-03 13:04:52,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 387 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-03 13:04:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-03 13:04:52,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 62. [2024-11-03 13:04:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 13:04:52,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2024-11-03 13:04:52,206 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 113 [2024-11-03 13:04:52,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:04:52,206 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2024-11-03 13:04:52,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-03 13:04:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2024-11-03 13:04:52,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-03 13:04:52,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:04:52,211 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:04:52,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 13:04:52,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:04:52,411 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:04:52,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:04:52,412 INFO L85 PathProgramCache]: Analyzing trace with hash 508969851, now seen corresponding path program 1 times [2024-11-03 13:04:52,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:04:52,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087770] [2024-11-03 13:04:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:04:52,413 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:04:52,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:04:52,414 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:04:52,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:04:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:04:52,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-03 13:04:52,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:04:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-03 13:04:58,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:05:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-03 13:05:19,425 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:05:19,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087770] [2024-11-03 13:05:19,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2087770] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:05:19,425 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:05:19,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2024-11-03 13:05:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768902118] [2024-11-03 13:05:19,425 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:05:19,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 13:05:19,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:05:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 13:05:19,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-03 13:05:19,427 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-03 13:05:32,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:05:32,547 INFO L93 Difference]: Finished difference Result 110 states and 135 transitions. [2024-11-03 13:05:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 13:05:32,553 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 114 [2024-11-03 13:05:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:05:32,554 INFO L225 Difference]: With dead ends: 110 [2024-11-03 13:05:32,554 INFO L226 Difference]: Without dead ends: 108 [2024-11-03 13:05:32,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=120, Invalid=259, Unknown=1, NotChecked=0, Total=380 [2024-11-03 13:05:32,555 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 89 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-03 13:05:32,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 311 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 332 Invalid, 2 Unknown, 0 Unchecked, 2.6s Time] [2024-11-03 13:05:32,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-03 13:05:32,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 63. [2024-11-03 13:05:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 13:05:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2024-11-03 13:05:32,575 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 114 [2024-11-03 13:05:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:05:32,575 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2024-11-03 13:05:32,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-03 13:05:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2024-11-03 13:05:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-03 13:05:32,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:05:32,577 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:05:32,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:05:32,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:05:32,777 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:05:32,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:05:32,778 INFO L85 PathProgramCache]: Analyzing trace with hash 507122809, now seen corresponding path program 1 times [2024-11-03 13:05:32,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:05:32,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580226475] [2024-11-03 13:05:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:05:32,778 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:05:32,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:05:32,783 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:05:32,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:05:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:05:32,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-03 13:05:32,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:05:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 326 proven. 36 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-03 13:05:41,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:06:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-03 13:06:08,307 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:06:08,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580226475] [2024-11-03 13:06:08,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1580226475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:06:08,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:06:08,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 22 [2024-11-03 13:06:08,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715108249] [2024-11-03 13:06:08,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:06:08,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-03 13:06:08,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:06:08,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-03 13:06:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2024-11-03 13:06:08,314 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 5 states have call successors, (36), 4 states have call predecessors, (36), 6 states have return successors, (36), 5 states have call predecessors, (36), 5 states have call successors, (36)